This is a pin wheel fireworks. (Can fireworks be singular?)
This is quickly becoming a favorite. Every process I run it through is a good shot. That usually does not happen. I like the perfect yellow circle with a red exterior. Of course the red sparks are interesting as well. You can see the wood grains of the post that held the wheel. All in all, very interesting.
Focal length 140 mm (210 mm for 35mm film)